Everyone knows that you have to change the oil in a car. We’ve all heard about the benefits of rotating the tires, changing filters and occasionally servicing the transmission.
But did you know that you should also service your HVAC unit twice a year?
Think about it. The average HVAC unit in North Carolina operates between 1,000-1,500 hours per year, depending on the size of your home, thermostat settings and a few other factors.
That’s a lot of wear and tear on the machinery responsible for keeping your home cool on those 90-degree days and warm during those cold winter nights.
In Eastern North Carolina, which tends to tax HVAC systems severely in the summer, we recommend having a professional service your HVAC system twice a year — ideally once in the spring and again in the fall.
Our Shields of Protection program includes this kind of maintenance, and our techs check a variety of potential issues, including:
- Outdoor unit coolant levels and pressures
- Thermostat
- Wiring, contacts, capacitors and relays
- Evaporator coil
- Condensate drain line
- Condenser fan motor and blades
- Electrical service disconnects/switches
- Compressor
- Record amp draws, capacitance, pressures and temperatures
- Unit filtration is correct
- Equipment safeties
- Carbon Dioxide (CO) levels
- Biological growth that can affect the Indoor Air Quality (IAQ)
Here’s a breakdown of our Shields of Protection program:

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